Medieval fantasy mmorpg wanted

Hiya guys
I'm tired of seeing tons of reviews and gameplay vids on youtube. So please help me with this.
I would like to play a mmorpg like this:
- Sandbox openworld universe, the biggest it be the better.
- Medieval fantasy universe.
- It should allow you to collect loot, little treasures and that stuff, which you can sell to earn money so you can improve your equipment.
- It should be pvp and pve as well.
- It may have a background story or not I don't mind.
- It should allow you to gain experience and grow in time.
- It should be free to play as much as possible, I may pay some money to buy expansions, kits, packs etc, but after spending a good time exploring and playing it.
- Not turn based or point to click gameplay, I find them predictable and boring.

Games I've tried (and discarded)
- WOW. The story is fantastic, nice gameplay, good graphics, but... very expensive.
- LOL. Nice graphics, nice combat mode, but pretty hard to gain level and... too much people that REALLY SUCKS!
- Albion online. Nice loot mode, good ish graphic, but too much coop features, it's okay to play and grow in groups but I like to explore and fight and earn things by my own and... not free to play.
- Entropia Universe. Spectacular graphics, nearly endless open world, but your life is like a prehistoric man from 28th century: You have to kill tons of animals with lasers, and collect tons of trinkets to get a low-Q weapon. So you spend 9/10 of your time trying to get resources... and it's scifi not medieval fantasy.
So experienced mmorpg players... suggestions please!!
Thank you very much

Would have recommended Albion Online if that wasn't one of your discarded choices. Only game that I could consider close to meeting as much of the requirements is Elder Scrolls Online: Morrowind which feels very medieval-like, but the game does feel like a money drainer.